SU1373682A1 - Gantry crane - Google Patents

Description

(21) 4065694 / 27-11

(22) 05 „05.86

(46) 15-02.88. Bnsh. № 6

(71) Production Association Zhdanovt Zhmash

(72) E.SoMinenkov and V.EssSharepoko

(53) 621.874 (088.8)

(56) Aleksandrov, MP Lifting and transport vehicles. - M .: Higher School, 1985, p. 51, rice 38.

(54) PORTAL CRANE

(57) The invention relates to a hoisting-and-transport machine building, namely to gantry cranes. The purpose of the invention is to reduce metal consumption. The gantry crane contains column 1, boom 2, pivotally supported on the turntable 3. The boom at the top is articulated with trunk 4. On the turntable 3 there is a superstructure 6 on which the beam 7 is pivotally supported. It is in the form of a beam, at one end which is placed cargo 9 to balance the boom system. The middle part of the beam is expanding and passes into the supports 10, through which the beam 7 rests on the superstructure 6. The longitudinal walls of the beam end in the middle part of the rocker arm 7 with eyelets in which deflecting blocks are installed and the end of the rigid projectile 13 is pivotally fixed.

(WITH

(L

with

with

Ci

with

N3

fie /

FIELD OF THE INVENTION The invention relates to lifting and transport machinery, namely, gantry cranes.

The purpose of the invention is to reduce metal consumption.

Fig, 1 shows a portal crane, a general view; Fig. 2 shows the rocker construction with a counterweight; in FIG. 3, view A in FIG. 2.

Gantry crane contains a column

I, boom 2, hinged on the turntable Zo Strela in the upper part is articulated with the trunk 4 carrying the deflecting blocks 5,

On the rotary platform 3, an add-on 6 is installed, on which the arm 7 is pivotally supported, complete in the form of a beam 8, ending with a box 9 in which the load is placed to balance the boom system. The middle part of the beam 8 is made expanding and passes into the supports 10, through which the rocker 7 rests on the superstructure 6. The longitudinal walls of the beam 8 end in the middle part of the rocker arm with eyelets

II, in which the deflecting blocks 12 are installed and the lower end of the fixed buckle 13o is pivotally secured. connected to the boom by means of jib jets 14, through blocks 5 and

12 hoisted cargo ropes 15 with cargo suspensions 16 and mounted on the drive drum lifting cargo (not shown),

When there is a load on one of the suspensions 16 in the harness 13 and the ropes 15, conditions arise that are perceived by the lengths 11 and are transmitted to the beam 8, and through its expanding part to the supports 10 and the superstructure 6.

Thus, footworm 7, in addition to its primary role of balancing the boom system, transmits reinforcements in the rope and ropes to the superstructure 6,

Claims (1)

The forces on the superstructure act strictly in the plane of the boom swing. In this case, all elements of the add-in work only for stretching or compression. There is no need to install a powerful transverse beam, working on bending. The formula of the invention Gantry crane, containing a turntable with a superstructure, mounted on them and forming 2 a hinged four-bar, a boom, a trunk and a hard stay, located on a vertical plane, fixed on a superstructure with a hinge that can be rotated in a vertical 30 planes and a rocker with a counterweight, pulled by a boom, and a load rope that deviates your blocks, characterized in that, in order to reduce metal consumption 2g, the lower end of the rigid brace and deflecting units are fixed on the beam, with their axes of rotation aligned with each other and with the axis of the rocker arm hinge qjus.Z view/